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Origin of the negative giant magnetoresistance effect in Co1-xCrx/Cu/Co (111) trilayers
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
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2004 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 69, no 9, 092406- p.Article in journal (Refereed) Published
Abstract [en]

We present a theoretical study on Co1-xCrx/Cu/Co (111) trilayers, where a transition from positive to negative giant magnetoresistance effect has been observed experimentally, with increasing thickness of the alloyed layer. The theory, based on a recently implemented conductance calculation, reproduces quantitatively this observation, and the effect is found to be caused by alloying effects, due to a virtual bound Cr d state in the majority spin channel of the Co-Cr layer.

Place, publisher, year, edition, pages
2004. Vol. 69, no 9, 092406- p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:miun:diva-13504DOI: 10.1103/PhysRevB.69.092406ISI: 000220812800017OAI: oai:DiVA.org:miun-13504DiVA: diva2:409605
Available from: 2011-04-08 Created: 2011-04-08 Last updated: 2011-04-08Bibliographically approved

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